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     #p1{text-transform:uppercase;}
     #p2{text-transform: lowercase;}
     #p3{text-transform: capitalize;}
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  <p id="p1">rome was't built in a day.</p> 
  <p id="p2">rome was't built in a day.</p>  
  <p id="p3">rome was't built in a day.</p>   
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